's siliconvalley,apple, facebookand google, among others, have reinvented the gold rush. but down the road in san jose it's not so pretty a picture. do the math, in an area where one fourth of the population earn an average of about $19,000 a year, rent alone can average morthan $20,000 dollars a year, and that difference adds up to homelessness. we talked to associated press reporter martha mendoza, who brought this story to our attention. >> i've been a journalist in this area for 25 years, and during that time it has gone from having a pretty robust middleclass to being an area where you see this great divide of wealthy and poor, and nowhere do you see that more than in the silicon valley, where 25 years ago this was a place of orchards and farms and ranching and small businesses, and it has completely changed now, so that you have incredibly wealthy people and incredibly poor people and a growing gap. homelessness has increased dramatically. in the shadow of google, in the shadow of oracle, in the shadow of apple computer, you have people who are hungry. >> people had this believe that